Trolley.



a 0 9 l 6 1 m G 0 D E T N E T A P nm HY E R L m T A APPLIGATION FILED JUNE 6, 1904.

3 SHEETS-SHEET 1.

.PATENTED 001;. I6, 1906.

A. H; DREIJBR.

TROLLBY. APPLICATION FILED JUNE 6, 1904.

3 BHEETS-SHEET 3.

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uiiorzzey and its pivot.

the line 8 8 of Fig. 8.

crossing the channel 11.

UNITED STATES PATENT OFFICE.

ANDREW H. DREIJER, OF NEW YORK, N. Y.

TROLLEY.

Specification of Letters Patent.

Patented Oct. 16, 1906.

Application filed June 6, 1904. Serial No. 211,324.

a resident of the city of New York, borough of Brooklyn, county ofKings, and State of New York, have invented certain new and useful Improvements in Trolleys, of which the following is a specification.

My invention relates for its object the production of a wheel which will secure the trolley-wire against displacement and preserve the electric current intact for the use of the motor in the car or other vehicle or boat using same while moving.

These and other objects and details of construction of my improved device are more fully described and set forth in the annexed claims.

In the drawings accompanying this specification and forming a part thereof like reference characters refer to like parts.

Figure 1 represents a side view of a trolleypole, illustrating the means of attaching same to a car and showing my improved trolley-.

wheel applied to the pole. Fig. 2 is a side view of the wheel, part of the trolley-pole harp being removed and shown in dotted lines.

Fig. 3 is a sectional view on the line 3 3 of' Fig. 4. Fig. 4 is a crosssection of the wheel on the line 4 4 of Fig. 2. Fig. 5 is a crosssectional view of the base of the trolley-pole section.

Fig. 7 is a modification. Fig. 8 is a cross-sectional vie-w of a modified form.

Fig. 9 is a diagrammatic illustration showing the use of a trolley in a circuit 'for railways,

Fig. i 1 O is a section, on a reduced scale, through Fig. 11 shows another method of inclosing a guide roller in its socket.

The trolley-wheel 10 proper is constructed of some non-conductive material and has a deep annular channel 11 cut into its peripheral face 12, the upper side edges of the channel being beveled, as at 13. The wheel 10 is mounted on a bolt 14, secured in perforations at the outer ends of the forked ends 15 of the harp, and the latter also on each side of the bolt-hole of each arm carries a springpressed pin 16, having on its inner end a brush 17. The wheel 10 carries on each side face several embedded contact -plates 18, against which the brushes 17 are pressed, and the plates are held in place on the wheel by lateral bolts 19, having nuts 20, the said bolts The bolts 19 each I, ANDREW HJDREIJER, a

to trolleys, and has in the following specification Fig.6 is a plan view, partly in adapted to loosely rotate on its bolt. The

groove '22 practically forms a continuation of the inclined sides 13 and in conjunction therea with carries the trolley-wire, and asthe wheel 10 is free to rotate it is evident that the tension of the springs at the base of the pole will force two rollers 21 intocontact with the wire and guarantee an effectual contact. In the drawings I have shown four of the bolts 19 and four sets of contact-plates 18, while in Fig. 2 the brushes are shown in dotted lines as being in contact with the two wheels on each side of avertical line. From the brushes 17 wires 23 and 24 run downward through the hollow trolley-pole '29, and the two 011 each side are attached to the sliding blocks 25 and 26, respectively, playing on the segments 27 and 28 at the base of the pole.

In the sides of the channel 11 at points midway between the rollers 21 are'bored radial holes to receive rollers 30, one of which occupies a substantially vertical position when the two upper rollers are supporting the trolley-wire and alines the same for its passage in the groove 22 of the rollers 21 at the same time. These rollers 30 prevent any friction of the wire on the inside walls of the channel 11 and is particularly useful when the car and trolley turn a curve, as it will serve to kee the wire from being forced out and away f fom the contact-rollers. After the rollers 30 are put in the holes they are retained therein by the side opening of the hole being of less width than the diameter of roller, and on top of them a plug 30 is put in the hole, and the plug is beveled to conform with the surface 13 of the wheel 10. Lugs 30 on the roller extend into sockets above and below same, and on this the roller revolves, reducing the friction to a minimum.

The lower end of the pole 29 terminates in a fork 31, which straddles and is pivoted to a block 32, having a socket'33 in its lower side to receive a pivot 34, on which it is adapted to turn, and from the block extend two arms and 36, carrying the sliding blocks 25 and 26, respectively. The fork 31 also carries links 31 which control rods 37 with springs 38, one of the latter being put under tension when the trolley-pole is swung around to its side, so as to force the rollers 21 against the trolley-wire.

Fig. 7 shows a modified form of my invention'in which I use two trolley-wheels 10,

each mounted on the end of a non-conduct ive bar 40, that is pivoted at its middle to the trolley-pole. At each end of the bar and connected with each wheel is a plate 41, to which is connected the conductors 42. A trolley-pole connection constructed in this manner would insure practically perfect contact with the wire. The brushes 17 are in contact with the plates of both of the two rollers on each side of the pivotal bolt 14, as are also the corresponding brushes on the opposite side of the wheel. This trolleywheel is also adapted for use on circuits where it is desired to abandon the use of the rail as a return-wire and permits of the use of the first contact-wheel to collect the current and pass it down one of the sets of wiresfor instance, the wires 23-through the motor up .and out the wires 24 to the trolley-wire, thus collecting and transmitting to the motor sufficient electric current to operate same. The wires shown on each side of the bolt 14 are adapted to cooperate and form practically one wirethat is, the wire 23 is divided and connects with a brush on each side of the wheel, these brushes making contact with the plates of the same roller and the wire 24 being also divided to make contact on each side of the wheel with the connections of the forward roller.

In Figs-8 and 9 are shown a trolley-wheel which enables me to use a return-wire in an electric circuit 45 and adapt a wheel of my construction to such use. In the wheel 45 the construction is practically the same as hereinbefore described, except that the dimensions are wider, there are two circumferential channels 46 and 47, and it has two sets of contact-rollers 48 and guide-rollers 49. The bolts 50, carrying the contact-rollers, are necessarily separated and insulated and held in place against the plates 51 by the pins 52 (shown in dotted lines) or any other dcsirable means, and the harp 53 of the pole 54 is wider and carries the brushes 55, whose stems 56 are set in insulated perforations, as at 57. The wires from the brushes are in this instance rearranged, and the wires 58 at one side of the wheel are united and enter the motor on the car or vehicle as one conductor, while the wires 59 at the other side are united into one conductor for the other pole of the motor. The guide-rollers 49 in this instance are set in sockets in the walls of the channels, the partition-wall 60 in this instance having sockets 61 opening into the two sides and open at the top by having sections 62 removed, but replaced and secured by the screws 63 when the rollers have been put in place. These rollers revolve on the usual axle 64. In Fig. 11 the guide-roller is put in its socket from the outside of the wheel and the axle-pin 64 inserted. Then the plate 65 is used to cover the opening, and it is held in place by screws 66.

The use of a trolley-wheel constructed as described above offers twice the contact-surface obtained in an, ordinary trolley-wheel, and consequently doubling its efliciency.

I do not confine myself to the use of a nonconductive material in the constuction of the wheel, but may find it desirable to make it of some conductive metal and use it as an ordinary wheel and to increase the contact-sur face. In such a case but one conductor-wire and brush would be necessary, or the pole itself might be put to that use. It is obvious that other modified forms or means may be adopted in the construction of this trolley without departing from the essential features, which I will now proceed to claim.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a trolley, the combination with a wheel having an annular channel in its periphery, of two or more rollers carried in the channel and adapted to be forced against the trolley-wire, means on each side of the channel for centering the wire in the rollers, and means for forcing the rollers against the wire.

2. In a trolley, the combination with a wheel having an annular channel in its periphery and carried by the trolleypole, of grooved rollers adapted to rotate in the channel and bear against the trolley wire, a contact-plate connected with each roller, brushes cooperating with the contact-plates and centering means for the wire on each side of the channel and between the rollers.

3. In a trolley, the combination with a wheel of non-conductive material and having a peripheral channel, of a trolley-pole and harp, conductive rollers in the channel, contact-plates on the sides of the wheel and 0011- nected with. the rollers, brushes on the arms of the harp and making contact with the plates, and centering means carried in the channel and between the rollers.

4. In a trolley, the combination with a wheel of non-conductive material and having a channel about its circumferential edge, of rollers in the channel adapted to make contact with the trolley-wire, a trolley-pole and harp, contact means carried by the harp, and centering-rollers in the sides of the channel.

5. In a trolley, the combination with a hollow trolley-pole carrying a non-conductive peripheral channeled wheel, of centering-rollers carried in sockets in the sides of the channel, grooved contact-rollers in the channel, shifting contact-blocks at the base of the pole, and means connecting the grooved rollers with the contact-blocks.

6. In a trolley, the combination with a pole pivotally mounted, of contact-segments about the pivot, contact-blocks carried by the pole and sliding on the segments, a nonconductive wheel carried by the pole and having a circumferential channel, centering-v Wheels in the channel, contact-rollers in the channel,'and electrical connection means between the rollers and the contact-blocks.

7. In a trolle the combination With a pivoted pole, meta lic segments about the pivot, sliding blocks carried by the pole and playing on the segments, a non-conductive Wheel at the other end of the pole and having a circumferential beveled-mouthed channel, grooved rollers across the channel, contactplates carried by the Wheel and connected With the rollers, brushes on the pole, electric connections between the brushes and the sliding blocks, radially-disposed guide-rollers in sockets in the sides of the channel, and

means for holding the guide-rollers in the sockets 8. In a trolley, the combination With a Wheel having a plurality of rollers journaled therein, the members of the same being designed to apply their surfaces to a conductor, means on each side of the channel for centering the Wire in the rollers, and means for forcing the rollers against the Wire.

Signed at New York city this 16th day of May, 1904.

ANDREW H. DREIJER.

Witnesses:

JOHN H. HAZELTON, FRED E. TASKER. 

